Test No. 6: Reel Motor Case Drain Leakage - Toro Reelmaster 5200-D Service Manual

TEST NO. 6: Reel Motor Case Drain Leakage

(Using Tester with Pressure Gauges and Flow Meter)
Note: Over a period of time, a reel motor can wear in-
ternally. A worn motor may by-pass oil to its case drain
causing the motor to be less efficient. Eventually,
enough oil loss will cause the reel motor to stall under
heavy cutting conditions. continued operation with a
worn, inefficient motor can generate a lot of heat, cause
damage to seals and other components in the hydraulic
system, and affect quality of cut.
Note: A way to find a possibly bad reel motor is to have
another person observe the machine while mowing in
dense turf. A bad motor will run slower, produce fewer
clippings, and may cause marcelling (or a washboard
appearance) on the turf.
1. Make sure hydraulic oil is at normal operating tem-
perature by operating the machine for approximately 10
minutes. Make sure the hydraulic tank is full.
2. Make sure machine is parked on a level surface with
the cutting units lowered and off. Make sure engine is off
and the parking brake is engaged.
3. Read Precautions for Hydraulic Testing.
Note: The reel motors are connected in series. To iso-
late a faulty motor, you may have to test all three motors
in the circuit by starting with the upstream motor first.
4. Disconnect the motor case drain hose (small diame-
ter hose) where it connects to traction unit (not at the mo-
tor). Put a steel cap on the fitting at the traction unit;
leave the case drain hose open (Fig. 24)
5. Disconnect hose from return of the motor to be
tested. Install tester in series with the motor and discon-
nected return hose. Make sure the flow control valve on
tester is fully open. (Fig. 24).
6. Set reel speed control to the full speed position.
Make sure Backlap switch is OFF.
Note: Use a graduated container, special tool
TOR4077, to measure case drain leakage (Fig. 24).
CAUTION
Cutting unit reels will rotate when lowered with
Enable/Disable switch in ENABLE position.
Keep away from cutting units during test to pre-
vent personal injury from rotating reel blades. Do
not stand in front of the machine.
Reelmaster 5200-D/5400-D
2
1. Case drain hose
7. Sit on seat and start the engine. Move throttle to full
speed (3200 RPM). Move "Enable/Disable" switch to
ENABLE. Move "Lower-Mow/Raise" lever forward to
engage cutting units.
8. While watching pressure gauge, slowly close flow
control valve on tester until a pressure of 1200 PSI is ob-
tained.
9. Have another person measure flow from the case
drain line for 15 seconds, then move the switch to DIS-
ABLE and stop the engine.
TEST RESULTS: Flow less than 0.5 GPM (less than 473
milliliters or 16 ounces of hydraulic fluid)
10.Disconnect tester from motor and hose. Reconnect
hose to the reel motor. Remove plug from machine. Re-
connect case drain hose to the reel motor.
11. If flow is more than 0.5 GPM, the motor is worn or
damaged and should be repaired or replaced.
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1
Figure 23
2. Return hose
Figure 24
Hydraulic System